Abstract
We calculate the lattice properties and electronic structure of cobalt disilicide using an ab initio total-energy method with optimized pseudopotentials. Special attention is paid to the development of a soft robust pseudopotential for the 3d element Co. The calculated band structure of ${\mathrm{CoSi}}_{2}$ agrees well with the results of all-electron studies and the equilibrium lattice constant, bulk modulus, and zone-center phonon frequencies obtained are in good agreement with experimental data.
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